Gibberellic acid is a high-efficiency plant growth regulator and stimulating hormone, which can significantly promote cell elongation, division and differentiation; it can effectively break seed dormancy, promote germination, accelerate growth and development, and induce plant bolting and flowering. Promotes the growth of fruit and fruit. But the plant growth regulator gibberellin is not a nutrient, nor is it omnipotent. The high yield, high quality and high efficiency of grapes must be based on comprehensive cultivation techniques such as soil, fertilizer, water and frame management.
Seedling use:
In the seedling period, the grapes are planted too late, and the growth regulator gibberellin is sprayed during the growth period. Although the growth of the branches can be accelerated, the branches cannot be fully matured, which leads to low survival rate of the seedlings and slow germination.
Processing time:
The use of gibberellin to spray the inflorescence in front of the grape flower causes the cob to elongate, but studies have shown that the fruit setting rate is lowered and the fruit is made smaller.
If the treatment is too late, it is possible to knock down the fruit during the treatment, resulting in a decrease in the fruit set rate.
3 to 14 days after the grape flower (the fruit setting period, different varieties use time), during this period, the plant growth regulator is used to treat the ear to break the original equilibrium state, which has a significant effect on the fruit expansion, thereby improving the efficiency of the drug use. . It can increase the fruit setting rate and increase the fruit.
Mixed use:
The mixed treatment of GA 3 and 6-BA (cytokinin) can also cause distortion of the ear, flattening of the cob and fruit rigidity, and large and small grain phenomenon.
